Roller-mill



(No Model.) 2 Sheets-Sheet 1.

J.'WALKER.

ROLLER MILL. No. 347,667. Patented Aug. 17, 1886.

WITNESSES l/VVE/VTOI? 2 Sheets-Sheet 2.

(No Model.)

J; WALKER.

ROLLER MILL.

Patented Aug. 1'7, 1886.

I WITNESSES UNITED STATES JOHN \VALKER, OF

CLEVELAND, OHIO.

ROLLER-MILL.

wLJ-LCIPICATION Forming part of Letters Application filed October 31,IP85.

To all whom/it may concern.-

Be it known that I, JoHN WALKER, of Cleveland, in the county of Guyahogaand State of Ohio, have invented certain new and useful Improvements inRoller-Mills; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it pertains to make and use the same.

My invention relates to improvements in mechanism for rollerflouring-mills, designed more especially for converting the old stylerolls that were geared into the modern style of rolls that are driven bybelts.

Formerly were made in large nu mbers a style of mill rolls in which oneroll of eachset was driven by a belt, and each belt-driven roll wasinter-geared with its respective cooperating roll. These mills were nota success as compared with the roller-mills now in common use. whereeach and all of the rolls are driven by belts, the unsatisfactory actionof the gearing being too well known to require further notice here. Suchintergeared rollers, consisting ofthe usual two sets or in all fourrolls,

with the frame and other attachments, coustitute an expensive and heavymachine. To remove such machine and remodel the same would involveagreat expense and long delay. I have therefore devised means by whichthe geared rolls can be converted into the modern belt-driven rolls withlittle expense or delay.

In the accompanying drawings, Figure 1 is a front side elevation offiouringmill rolls, illustrating my improvements, and showing also indotted lines the old style gearing on the rear side that is supersededby my improved mechanism. Fig. 2 is a rear side elevation showing therolls with the gears removed and the pulleys and other attachmentssubstitutedembodying my invention. Fig. 3 is a plan view of the pulleysat the rear side, and Fig. 4 shows the gearing for which the band-wheelsare substituted. Fig. 5 is a plan View of a swinging frame andcounter-shaft, the same being an essential feature of my invention.Figs. 6 and 7 are elevations of one of the connecting-rods and claspsfor adj usting the swinging frame.

The usual flouringmill rolls consist of four Patent No. 347,667, datedAugust 17, 1885.

Serial No. 151.518. (No model.)

I rolls, A, A, B, and B, arranged in pairs, as shown. The rolls A and Bhave respectively theband-wheels a and I), over which passes thedriving-belt O, the latter also passing around the idle-pulley O. Thispulley O, I mount on a shaft, 0, that islong enough to extend throughand project on the other side of the machine. Theshaftcis journaled insuitableboxes,d,that are attached to or integral with the frame D. Thisframe at one side is hinged at D to the floor. by the adjustable rods E,hereinafter more fully described. On the rear end of the shaft 0 aremounted the band-wheels F and F.

To convert one of the old-style machines having intcrgeared rollers, asshown in Fig.4, into a more modern machine, I remove the gear-wheels andcut off the trunnions of the rollers A and B, which are driven by thebelt 0, just outside of the jOlll'lliilbOXQS. On the trunnion of theroller B, I place the bandwheel G in line with the wheel F, with whichit is connected by a belt. On the trunnion of the roll A is mounted theband-wheel G in line with the pulley F. The pulley G is made with a longhub, g, as shown, to carry it out in line with its driving-pulley F. Agroove. 9, is for a round belt that drives the feed mechanism above.(Not shown.) It will be seen from the arrangement ofthe main beltO thatthe pulley 0 must necessarily turn in an opposite direction from therolls A and B, and, consequently from the connections already shown, therolls A and B will move in the same direction as when operated by thegears shown in Fig.4that is, in the opposite direction from the rolls Aand B. Of course the sizes of the different pulleys are arranged to givethe required relative speeds to the different rolls.

The geared machines almost universally have large stay-rods H extendingfrom one side of the frame to the other. To one of these rods I connectthe rods E in the following way: Clasps E,madein l1alves,are made to fiteasily on the rod H. The two halves of each clasp are secured by theclamp-bolt eand the band 6. With this construction these clasps areplaced upon the rod H without removing or unfastening the latter fromthe machine. The parts On the other side the frame is held of the claspsthat extend around the rod Hare usually cored, as shown in Figs. 6 and7,

leaving merely chipping-pieces outside that may be easily fitted by handto the rod H in case a lathe or machine to bore the clasps is notconveniently near at hand. The lower end of each clasp isthreadedinternally to receive the threaded end of the rod E. An enlargedportion E of the rod E has pin-holes; or it may be squared to receive awrench for turning the rod E. At the extreme lower end of the rod E isthe collar 0*, and between the parts E and e the rod E fits the cap (1.These caps are made in halves and bolted to the frame D, as shown inFig. 5. It will be seen that these parts may be assembled withoutdisturbing the old machine. By unscrewing the rods the connection is ofcourse lengthened and the front end ofthe frame D is thereby depressed,which depression would of course tighten all of the belts, or byscrewing up the rods E all of the belts would be loosened. \V'nen newbelts are put on, the frame 1) is elevated, and afterward (by turningthe rods E) is depressed a trifle from time to time as the bellsstretch. The frame D and attachments therefor serve as a tightener, andwhat was an idle-pulley, G, is converted into a driving-palley,fromwhich power is transmitted to the rolls A, and B, as aforesaid.

in making new machines, about the only change that I would suggest wouldbe to extend the rear end of the frame I) and hinge it to the rear legsof the machine, sothat the attachments would be complete when themachine was shipped. In case the stay-rods H were wanting studs could beattached to the side frames in place of the rod H, and to such studs theclasps E could be attached.

\Vhat I claim is In a roller grinding-mill, the combination, with theframe, the stay-rod H, and the rollcrs having the belt-pulleys thereon.of a frame pivotally secured at one end to the foundation or floor at apoint below the machine-frame, sm'ew-threaded rods and clasps connectedat their upper ends to the stay-rod and at their lower ends to the freeend of the frame for adjusting said frame, a shaft mounted on said

